FIELD: mining industry. SUBSTANCE: method for charging of inundated holes with hydrolabile granulated explosives includes supply of compressed air to hole bottom, displacing water from hole, and hole charging. Compressed air is supplied to hole bottom by charging pipeline with nozzle installed on the centering member. Nozzle forms a gap with hole walls. The gap is used to pass water displaced from hole bottom upward. Compressed air is continued to be supplied and nozzle is raised to displace with its centering member the water out of hole. Charging pipeline is lowered again to hole bottom and granulated hydrolabile explosives are pneumatically charged into hole. EFFECT: higher efficiency. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CHARGING OF INUNDATED HOLES WITH HYDROLABILE GRANULATED EXPLOSIVES | 1993 |
|
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| APPARATUS FOR FORMING CAVITY IN EXPLOSIVE CHARGE | 0 |
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